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Equivalent source reconstruction method of visual CRBBB/CLBBB heart electrical activity

A technology of equivalent source and cardiac electricity, applied in the field of signal processing, to achieve the effect of fast calculation, convenient clinical application and high accuracy

Inactive Publication Date: 2014-03-26
TONGJI UNIV
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  • Equivalent source reconstruction method of visual CRBBB/CLBBB heart electrical activity
  • Equivalent source reconstruction method of visual CRBBB/CLBBB heart electrical activity
  • Equivalent source reconstruction method of visual CRBBB/CLBBB heart electrical activity

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0035] An equivalent source reconstruction method for visualizing CRBBB / CLBBB cardiac electrical activity, comprising the following steps:

[0036] 1) if figure 1 As shown, the magnetic field measurement signal is a magnetic field signal collected in real time by array-distributed superconducting quantum interferometers (magnetic field measurement instruments) on the surface of the human chest cavity.

[0037] The cardiomagnetic signals in this embodiment are 36-channel cardiac magnetic field data distributed in a 6×6 array, and the distance between adjacent measuring points is 4 cm....

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Abstract

The invention relates to an equivalent source reconstruction method of a visual CRBBB / CLBBB heart electrical activity. The equivalent source reconstruction method of the visual CRBBB / CLBBB heart electrical activity comprises the steps that time coordinates of heart magnetic measurement signals align to time coordinates of electrocardiosignals which are measured synchronously, and QRS sections and ST-T sections are cut out from heart magnetic measurement signals in a single period, wherein the heart magnetic measurement signals are provided by a heart magnetic signal measuring instrument, are processed through earlier-stage signal processing, and are distributed in an array mode, and the QRS sections and the ST-T sections correspond to the electrocardiosignals; interpolation is carried out on the heart magnetic measurement signals, and a high-resolution magnetic field contour map, namely a magnetocardiogram, is obtained; parameters of an equivalent current dipole and movement track graphs of the equivalent current dipole at all the moments are calculated according to data of the magnetocardiogram, and visualization of the CRBBB / CLBBB heart electrical activity of a patient is achieved. The equivalent source reconstruction method of the visual CRBBB / CLBBB heart electrical activity is a source reconstruction method which can represent the effect of body electric conductance on a magnetic field through the maximum value and the minimum value of the magnetic field, can disclose the movement track of the current dipole within the range of the heart of the patient with CRBBB / CLBBB, and have the advantages of being high in calculation speed and relatively high in accuracy, and facilitating clinical application.

Description

technical field [0001] The invention relates to a signal processing method, in particular to an equivalent source reconstruction method for visualizing CRBBB / CLBBB heart electrical activity. Background technique [0002] In the 1970s, D. Cohen et al. used a superconducting quantum interference device (SQUID) to measure the magnetic field of the human heart for the first time in the laboratory. In 1976, the developers of the magnetocardiometer successively proposed the method of diagnosing myocardial ischemia with magnetocardiogram and pseudo current density map (or arrow map, also known as Hosaka-Cohen transformation), and solving the inverse problem of cardiac magnetic field equivalent source location. Theory and Method. [0003] The methods of cardiac magnetic field research are roughly divided into two categories: one is the statistical analysis method, which extracts disease-related feature information from the cardiac magnetic field contour map (MFM) and current densit...

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Application Information

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IPC IPC(8): A61B5/05A61B19/00G06F19/00
Inventor 蒋式勤朱俊杰
Owner TONGJI UNIV
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